What are good co-op or multiplayer demos

I have three very good co-op/multiplayer demos (This is my opinion, sorry if you don't like the demos.) for you. The first one is called Crackdown 2 Demo. If you don't have an Xbox 360/Xbox Live you can't get it. It's unfortunately Xbox 360 only. The next one is Crysis 2 Demo, and last is Homefront Demo. I'm not exactly sure if they all are still on the marketplace. I hope this helps!